norton



c. H. NORTON. TRUCK FOR WASTE MATERIAL. APPLICATION FILED JULY 22, 1919.

ReiSSued'May 16, 1922.

2 SHEETS-SHEET 2.

. UNITED srA'ras PATENT omer..

CHARLES H.' NORTON, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO NORTONlGERJN'DIlI'G' COMPANY, OF WORCIBTER, MASSACHUSETTS, A CORPORATION 0FMASSACHUSETTS.

TRUCK FOR WASTE MATERIAL.

Specification ofleissued Letters Patent. Reissued May 16, 1922.

Original No. 1,234,376, dated July 24, 1917, Serial No. 118,144, ledSeptember 1, 1916. Application for reissue illed J'uly 22, 1919. SerialNo. 312,578.

To all whom it may concern:

Be it known that I, CHARLES H. Non'roN,

' a citizen of the United States of America,

residing at Worcester, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inTrucks for Waste Material, of which the following is a full, clear, andex,- act specification.

This invention relates to a truck for waste material, particularldesigned for use i-n connection with grin ing machines and other similarmachine tools. l

When such machines are used for heavy duty it is customaryy to flood thegrinding wheel or other tool with a cutting compound, maintained inrapid circulation by means of a rotary pump. As the liquid andwastematerial leave the tool it is conveyed to a settling tank yin which alarge proportion of the Waste material is retained while the partiallycleared liquid is returned by the pump to the cutting tool. It has beencustomary to form the settling tank and pumping chamber as integralparts of the machine, ibut objections have been found to this' method ofconstruction. Under modern conditions of operation, the waste materialaccumulates very rapidly in the settling tank and it is necessary tofrequently empty and clean both the tank and the pump chamber. Thisoperation requires a consideorable amount of time during which themachine is necessarily inoperative.

It is the object ofmy invention to imf prove such conditions byproviding a truck for the waste material which may be readily removed.for dumping and cleaning. In its preferred form a partition separatest-he truck or tank into settling fand pumping compartments. In the useof this truck it is assumed that a plurality of trucks will be 'provided'so that one truck may be with-V drawn and another substituted as soonasthe settling tan-k is filled to a point which necessitates Iremoval ofthe'waste material.

.In connection with my improved truck-I also provide a pump which maybereadil raised to permit withdrawal of the truc Withoutl disconnectingthe pump from the machine to which it is attached. Further features of`my invention relate to the form vof the tank, to means forl positioningthe tank relative to the pump and the machlne to which the pump isattached, and to the handle provided fornmoving the truck. Otherfeatures of my' invention relate to certain arrangements andcombinations of parts herelnafter described and more -particularlypointed out in the appended claims.

A preferred form of In linvention is shown in the drawings, in w ich-Figure 1 is a partial plan view of a truck embodying my lmprovements; A

Fig. 2 is a side elevation of the truck' Fig. 5 is a detail sectionalview of the connection between the handle and the truck, taken along theline 5 5 in Fig. 3;

Fig. 6 is an enlarged detail view of the means for positioning the truckrelative to the machine;

Fig. 7 is an enlarged lsectional view taken along'the line 1 7 ofvFig. 3and -showing the means for locking the handle in position on the truck;

Fig. 8 `is aside elevation of the locking mem er which is secured to thehandle, and

Fig.`9 is a sectional View of the locking plate which Iis secured to thetank, taken along the line 9-9 of Fig. 7,

Referring to Figs. 1, 2 and 3, my improved truck comprises a tank or.casing 10 preferably sepai'ated by a partition 11 into a settlingchamber 12 and pumpV chamber 13. The partition 11 extends to a pointslightly below the top of the settling chamber 12 and thus permitsover-flow of the liquid from the chamber 12 to the chamber 13. A pair ofwheels 14 are rotatable upon studsl5 (Fig. 5) secured to the sides ofthe tank or casingr 10. The wheels 14 support the truck near the outerend thereof, but the load is so distributed that it is largely balancedabout the center of the studs 15..

At its inner end the truck is provided with a projection 16 having adownwardly extendwhich the cuttin compound and `wast vthe speed with"which ber 33 clamped to the handle by a screw 34v shown in ingcylindrical `portion 17. f A bracket 18 is secured in f anyl convenientmanner to the frame of the grinding or. other machine with whichthetruck isl to be used. The bracket 18 has a outwardly projecting iangeshaped as shown in Fig. 6 to provide a flaring opening for guiding thecylindrical portion I7 of the projection 16 to its desired position. Inthis position the shoulders of the projection 161above the` cylindricalportion' '1.7rest upon the bracketlS and thus support 4the rear portionofthe truck, while theiportion 17 prevents accidental sidewise displace*ment thereof. f L 1,

In Fig. 2 I have indicated a grinding machine 20 having an extension 21servinfg as a part of the grinding Huid conduit rom terial fiows into te settling tank 12". p also indicated a rotary `pump 22 liaving spiralgears 23 and 24 or other suitabiedriving connections from thegrindingmachine, and I have shown a ipe or conduit 25 which conve s the `cuttingcompoundback to theV grin ing wheeli 'The pumplx'22 is mounted to swingabout the axis lof theigear 23 so that it can beturned into la genelally horizontal position inl which it cleaiisij` the rear wall of` thetruck. vA bolt 26 is threaded into a fixed part of the grinding .machineand passes through a curved slot 27 so that the ump may be secured ineither osition by tightening the bolt. In order to increase thepump maybe manipulated.. I prefer; to employ a `latch 28 toysecure it in eitherposition.'` This latch ispivoted on a fixed part of thevmachineandconstructed to engage one or vthe other of two notches 29 formed on thelflange ofthe pump casing.y After the pump is thus raised the truck maybe conveniently removedLby lmeans of the U-shaped handle 30.

The ends of the handle 30 areprovided with heads 31 formed withelongated loops 32 which are slidable longitudinally and angularlymovable on the hubs 14*L of the wheels 14'. Special provision uis madefor locking the handle tov the truck in either one yof two positions.Each side portion of the handle is provided with a locking memaiidprovided with a spring-pressed plunger 35. Cooperating locking plates 36are seycured to the sidesof the tank 10, one pair of plates beingprovided for positioning the handle a showninFigQ andan additional `pairof'plates Jr'or.positioning thehandle as shown in 3. 'Each plate "36isdee'ply notched toreceive the member 33 andi's pro-vv vided with araised rib 37, as shown in Fig. 9. Assuming that the handie is to heshiitad from the position shown 1n Fig. 2 to that pulls the `loops bersforth in the claims.

lbottom thereof and driving an means for the pump permitting the latterto fig. ZL the handle is raised and.

52 along `the hulls la* Aiiiitl 4the locking members 33 are movedout-cig the locking plates 36. The handle can then be swung y to thedesired position, after which it ispushed in until the lockingmementerthe notches or recesses between the raised side portions of theplates 36, and the plungers' pass across the ribs B7. The handle is thusheld against sidewise move ment 4by the 'plates 36, and the plungers 35prevent accidental endwi'se movement.

When the truck ismoved to its upright or dumping position it is raisedwheels and rests on theend portion l0 of the casing 10. The adjacentlower corner of i the casing is rounded ofi" so as to permit ,easymovement of the truck to the position of Fig. 3 and the dumping of theload is thus readily accomplished. position the waste material in thesettling tank can be readily removed and the entire device can becleanedwith little difficulty.

By the use of this truck the time lost uring the removal of the wastematerial has been very largely reduced i Having thus described myinvention it will be evident that further changes and modifications canbe made therein by those skilled in the art' without departing from the'spirit and scope of the invention as set I do not wish therelimited to.the details fore to be otherwise 'herein disclosed but what I claim isl. In a grinding machine, the combination of a movable tank, meansincluding wheels for supporting the tank and permitting ready removaland cleaning' thereof, a pump for circulating liquid from the tank tothe machine` said pump having a conduit opening into said tank at apoint ad'acent to the supporting be kmoved from an operative positionwithout breaking the driving connections, whereby the tarik may beremoved for dumping the sediment therefrom.

2. In a grinding machine, the combination with a movable tank, of a pumppivotally supported on the machine for returning liquid from the tank tothe machine, means to drive the pump, and securing means for' said pumppermitting it to be swung upward from its normal position prior to theremoval of said tank.

3. In a grinding machine, the combination with a movable tank, of a pumpAfoi-'returning liquid from the tank to the machine, and an adjustableconnection between said in achine and pump permitting said pum to heraised from operative position and e 'ective operative position.

e.. in grinding iiiaifhinc. a driven shaft. a pump suspended irons anddriven by the 'sharia ,a tank, wheels thereon permitting the tank `to he`readily moved and located adjacent the machine Vwith the pump inside ifrom its i 'wh-11e in this ceive liquid and waste material from the mafchine and having a second compartment into which said/ liquid overflows,andsaid machine having a pump adapted to re-convey said liquid from saidsecond compartment to -the working point of said machine, said pumpcomprisinga driving shaft rotatable in fixed bearings, a head mountedfor angular adjustment about the axis of said shaft,

means to secure said head in adjusted position, and a rotary drivenpumping member mounted in said head, angular movement of said headpermitting the pumping member to be swung into and out of said secondcompartment, thereby permitting removal of a loaded truck.

6. In combination with a grinding machine, a movable truck comprising acasing having a settling tank and a pump chamber therein for containing-liquid and waste material, means comprising wheels supporting saidtruck and permitting removal thereof from adjacent the machine, andcooperating means on the machine and truck to locate the truckaccurately in operative position for pumping the liquid therefrom andhold it from accidental displacement.

7. In combination with` a; grinding machine having movable conduits, apump and a discharge spout projecting over a clear space forcirculatingluid to the grinding wheel, a freel removable truck having achamber thereln to hold said fluid, wheels supporting the truck near oneend which are constructed and arranged to permit moving the truck andtilting it for dumping its contents and means to support the oppositeend of the truck and locate it in operative position beneath thedischarge spout.

`8. In; combination with a grinding machine having conduits forcirculating a Huid to a grinding wheel, afixed guiding member thereon, atruck for waste, material comprising a casing, wheels supporting saidcasing near one end thereof, and a projection on the opposite end ofsaid truck adapted for engagement with the fixed guiding member on themachine,.said projection and member cooperating to position said truckand-tosupport the rear end thereof.

9. A truck for waste material comprising a. tank casing, a partitionwithin said casing over which liquid can flow from,r one compartment toa second compartment, and wheels .supporting said truck in uoneposition, said casing'having an end portion upon which said truck restswhen in dumping position.

10. A truck for Waste material comprising 'a casing,'and wheels uponwhich said casing is supported in one position, said casing having anend portion constituting its base during cleaning operations, and saidend portion being curved adjacent thecircumference of said wheels,whereby the support of said truck may bereadily changed.

l1. Atruck for waste material comprising a Atank casing, wheels for saidcasing, a handle, means to hold said handle in convenient position tomove said truck, and

means to hold said handle in position todump the waste materia-l. l

12. A truck for waste material comprising a casing, wheels supportingsaid casing, a handle on said casing, and means to secure said handle tosaid truck in either one of' two positions, said means including alocking member having a spring-pressed plunger and a. cooperatinglocking plate by which the handleis yieldingly held in either posi-`tion.

13. A truck for waste material comprising a tank casing, wheels for saidcasing, a handle, means to hold said. handle in convenient position tomove said truck, and means to hold said handle in position to dump thewaste material, said means comprising loops on said handlelongitudinally slidable and angularly movable about the axis of thewheels, locking members on said handle, and separated locking plates onsaid casing effective to hold said handle in either one of twopositions.

Signed at Worcester, Massachusetts, this 21st day ofl July, 1,919.

. CHARLES H. NORTON.

`(Iertic'zilte of Correction@ y hereby certified that ythe ssiglnee inReissue LettersPatent lNo. 15,356,

'granted May 16, 1922,- uporrthe application of CharlesH. Norton,ofWorcester,

Massachusetts, for an improvementlin Trucks forVeste Material, was4erroneousiy described and specifed'sas Norton Grinding Company, ofWorcesteigrMassa- I 4eh1isetts,'a Corportion of4 Mssachiisetts, Whereas'said Lettersl Patent should` have been described and specified as Norion Company, of Worcester, Massachusetts a Corporation ofZIIassacLu-selts, `as shown by the records offassignments in this,-`

o'ce; and thnt the saidLettersPatent should be Vread with thiscorrection therein thatV the same may eonform` to the record of the`oase in the Patent Office. y

Signel and sealed` this 20th day o-J une, A; D., 1922.

[m1 i i 4KARL FENNING,

Acting Commissioner of Patents.

